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Chinese-made infrared telescope with domestic detectors achieves astronomical imaging, reducing foreign reliance_我的网站

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    Ground-based infrared telescope installed at Saishiteng Mountain, Lenghu township, Northwest China's Qinghai Province Photo: Screenshot from gdstc.gd.gov.cn
Chinese scientists on Wednesday released the first complete set of observational images captured by China's new-generation ground-based infrared telescope, filling a gap in the country's near-infrared astronomical observation capabilities and reducing reliance on foreign infrared detector technology, China News Service reported on Wednesday. 
The 80-centimeter near-infrared telescope was installed at Saishiteng Mountain, Lenghu township, Northwest China's Qinghai Province in October 2024. Jointly developed by Sun Yat-sen University and several partner institutions, the telescope is China's first to achieve scientific imaging in the 1.2-micrometer J band and 2.2-micrometer K band using domestically developed scientific-grade InGaAs and HgCdTe detectors. 
The telescope enables unattended remote operations, and can lock onto any target in the sky within 15 seconds. Its infrared capability allows it to see through interstellar dust, enabling it to observe cold and distant celestial objects that are difficult for optical telescopes to capture. 
According to Ma Bin, a professor at the School of Physics and Astronomy, Sun Yat-sen University who led the research team that released the infrared telescope's observational images, all three of the telescope's core astronomical observation capabilities were fully validated during operation. 
It rapidly responded to and tracked multiple gamma-ray bursts and supernova events, recording the evolution of their infrared afterglows following the explosions. It continuously monitored brown dwarfs, precisely capturing periodic variations in their atmospheric brightness. Using image-stacking technology, it also observed active galaxies billions of light-years away. 
Since its deployment in Lenghu, the system has supported infrared observations for more than 10 Chinese research institutions, accumulating valuable experience for the construction of future large-scale infrared telescopes. 
Lenghu township, where the world-class astronomical observation base takes shape, is hailed as "the most Mars-like place on the Earth." The astronomical observation base was said to be an astronomical observation site comparable to the top ones in the world by a Nature article published on August 18, 2021, according to the Chinese Academy of Sciences. 
Once prospered in 1950s due to its rich petroleum resources, Lenghu is now becoming a premier astronomical observation site and Mars-themed tourist destination, according to Xinhua News Agency.
Global Times
。    During a training exercise in the ocean on Sunday, a lifeguard from Long Island, who was playing a victim, was attacked by a shark, the local media reported.,The lifeguard reportedly fought the animal off with his bare hands. During his scary encounter with the 4- to 5-foot-long (1.2-1.5 m) shark, Smith Point Beach lifeguard Zack Gallo was bit in the chest and right hand, Suffolk County Executive Steve Bellone reportedly stated at a news conference.,"He was playing the role of a victim, and in the midst of that, actually became a victim when this shark bite occurred,” the official noted.,Bellone reportedly claimed that Gallo defeated the shark by "punching down" on it. According to the report, the lifeguard's hand injuries "occurred as he was beating off the shark," and after that interaction ended.",The lifeguard reportedly was "bleeding significantly" when other guards who were already in the water for the exercise raced to aid him, but the victim surprisingly managed to get out of the water unaided.,After being bandaged, the injured lifeguard was brought to a nearby hospital.,“Fortunately, he is doing well,’’ the official said. “He’s in very good spirits at Southside Hospital … getting some stitches.",The attack caused the beach to be closed. Later, the same shark may have been spotted by police using a drone to monitor the ocean, according to the report, but the authorities could not determine if it was the same shark or not.,Even more to the news about sharks getting dangerously close is that Cupsogue, a second beach east of Smith Point, was also reportedly closed on Sunday "due to dangerous marine activity.",On July 1, a 57-year-old swimmer in the area of Jones Beach in Nassau County experienced a "possible shark bite," the police said. This incident prompted the authorities to increase beach patrols ahead of Fourth of July.,Shark attacks on Long Island are "very rare," but recently they have reportedly become more frequent. More shark sightings have occurred in the last two years than in the prior ten years combined.,Two Women Killed in Shark Attack Off Egypt's Red Sea CoastYesterday, 13:00 GMT。

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